Former President George H. W. Bush and Mikhail Gorbachev, Nobel Laureate and former president of the Soviet Union, had lunch together Thursday at an exclusive Houston club.

Gorbachev, who is in Houston for a speech tonight, and Bush have maintained ties since both left office. In 1989, just a few weeks after the fall of the Berlin Wall, the two presidents met at a summit in Malta where they essentially declared an end to the Cold War.

Gorbachev was awarded the Nobel Peace Prize in 1990 for reforms he initiated that ultimately led to the dissolution of the Soviet Union. He is the founder of Green Cross International.